Update TA-Lib installation script to version 0.6.1

- Update wget command to download TA-Lib 0.6.1 source archive
- Modify tar extraction to match the new version's archive name
- Update directory path to match the extracted TA-Lib 0.6.1 archive
- Remove previous sed modification for floating-point precision

docker_build_helpers/install_ta-lib.sh

@@ -5,9 +5,9 @@ else
 fi
 echo "Installing to ${INSTALL_LOC}"
 if [ ! -f "${INSTALL_LOC}/lib/libta_lib.a" ]; then
-  tar zxvf ta-lib-0.4.0-src.tar.gz
-  cd ta-lib \
-  && sed -i.bak "s|0.00000001|0.000000000000000001 |g" src/ta_func/ta_utility.h \
+  wget https://github.com/TA-Lib/ta-lib/releases/download/v0.6.1/ta-lib-0.6.1-src.tar.gz -q
+  tar -xzf ta-lib-0.6.1-src.tar.gz
+  cd ta-lib-0.6.1/ \
   && ./configure --prefix=${INSTALL_LOC}/ \
   && make \
   && which sudo && sudo make install || make install \